From patchwork Fri Apr 11 02:54:41 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saravana Kannan X-Patchwork-Id: 3966041 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 3B3A7BFF02 for ; Fri, 11 Apr 2014 02:55:29 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4CBEC20813 for ; Fri, 11 Apr 2014 02:55:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5AF2C207F7 for ; Fri, 11 Apr 2014 02:55:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751014AbaDKCyy (ORCPT ); Thu, 10 Apr 2014 22:54:54 -0400 Received: from smtp.codeaurora.org ([198.145.11.231]:42083 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750710AbaDKCyx (ORCPT ); Thu, 10 Apr 2014 22:54:53 -0400 Received: from smtp.codeaurora.org (localhost [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id 8BE2213EF70; Fri, 11 Apr 2014 02:54:52 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 486) id 7DDE013F363; Fri, 11 Apr 2014 02:54:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from skannan1-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: skannan@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 0A22113EFFC; Fri, 11 Apr 2014 02:54:46 +0000 (UTC) From: Saravana Kannan To: MyungJoo Ham , Kyungmin Park Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Saravana Kannan" Subject: [PATCH] PM / devfreq: Use freq_table for available_frequencies Date: Thu, 10 Apr 2014 19:54:41 -0700 Message-Id: <1397184881-12223-1-git-send-email-skannan@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some devices use freq_table instead of OPP. For those devices, the available_frequencies file shows up empty. Fix that by using freq_table to generate the available_frequencies data when OPP is not present. Signed-off-by: Saravana Kannan --- drivers/devfreq/devfreq.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 2042ec3..a715d15 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -912,19 +912,26 @@ static ssize_t available_frequencies_show(struct device *d, struct devfreq *df = to_devfreq(d); struct device *dev = df->dev.parent; struct dev_pm_opp *opp; + unsigned int i = 0, max_state = df->profile->max_state; + bool use_opp; ssize_t count = 0; unsigned long freq = 0; rcu_read_lock(); + use_opp = dev_pm_opp_get_opp_count(dev) > 0; do { - opp = dev_pm_opp_find_freq_ceil(dev, &freq); - if (IS_ERR(opp)) - break; + if (use_opp) { + opp = dev_pm_opp_find_freq_ceil(dev, &freq); + if (IS_ERR(opp)) + break; + } else { + freq = df->profile->freq_table[i++]; + } count += scnprintf(&buf[count], (PAGE_SIZE - count - 2), "%lu ", freq); freq++; - } while (1); + } while (use_opp || (!use_opp && i < max_state)); rcu_read_unlock(); /* Truncate the trailing space */